C# Traverse dataGridView to find null value and place "0" instead -

i traverse values found in datagridview, check if value null , if null place "0" value not null. can please assist?

for (int = 0; < (datagridview1.rows.count - 1); i++) {     (int j = 0; j < (datagridview1.columns.count - 1); j++)     {         if (datagridview1.rows[i].cells[j].value == null)         {             datagridview1.rows[i].cells[j].value.equals("0");         }     } } 

thanks!

use:

if (datagridview1.rows[i].cells[j].value == system.dbnull.value) {     datagridview1.rows[i].cells[j].value="0"; } 

as condition checking null values in datagridview. if need may check string.isnullorwhitespace well.